Demountable rim.



T. F. BURNS DEMOUNTABLE RIM.

APPLICATION FILED NOV- 22. I916- LQWfiQU Patented Nov; 27, 191?.

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Application filed November 22, 1916. Serial No. 132,554.

To all who'm zf'may concern:

Be it known that l, THOMAS F. Borneo citizen of the United States, residing at Oklahoma, in the county of Oklahoma and State of Oklahoma, have invented a new and useful Demountable Rim, of which the following is a specification.

It is the object of the presentinvention to provide novel means for looking a de-- mountable rim to the felly of a vehicle wheel.

The invention aims to provide novel means whereby a circumferentially movable ring may be made effective to hold the demountable rim on the telly, and to pro- Qvide novel means whereby, when the said ring is actuated, the same will start the de mountable rim transversely oil the telly.

The invention aims to improve generally and to enhance the utility of devices of that type herein disclosed. .4

With the above and other objects in view which will appear as the description procoeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter describer and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed be made within the scope of what is claimed, without dcparting from the spirit of the invention.

In the accompanying drawings Figure 1 shows in top plan, a device constructed in accordance with the present in- 'vention, a portion or the demountable rim appearing in section; V

Fig. 2 is a cross section on the line 22 of Fig. 1; i

Fig. 3 is a iragrnental longitudinal section;

Fig. 4: is a fragmental side elevation showing a wheel rim embodying the present invention; and

Fig". 5 is a cross section taken approximstely on the line 5-5 of Fig. 1;

Fig. 6 is a fragmental cross section showing the manner in which the wedge on the lug oi the locking" ring engages beneath one end of the rib on the demountable rim; and

Fig. 7 is a side elevation showing that portion of the ring which carries the locking wedge shown in Fig. 6.

The numeral 1 designates a telly having side flanges i2 and 3. The side flange 3 is lug provided with a notch l. A. pair of recesses 5 and 6 are "fashioned in the telly 1. The telly 1 has a circumferential groove 7 located near the side flange 3. rotate circulnterentially of the folly 1 in the groove 7 is a ring 8 which preferably is continuous. The ring 8 has an upstanding 9, the inner face of which is inclined as shown at 10. The lug; 9 has a wedge 90 on its inner side. The wedge 9-0 slopes in a direction parallel to the median plane of the wheel. l /lounted on the telly 1 is s spring 11 held in place by securing elements 12. The spring- 11 may be of any desired form, one end of the spring bearing on one end of the lug 9. The function of the spring 11 is to rotate the ring 8 in the direction of the arrow A. The ring 8 is provided on its under surface with a rack 14. A. pinion is located in the recess 5 and meshes into the rack 14;. The pinion 15 is carried by a transverse shaft 16 journaled in the telly 1. Que end ot the shaft 16 is accessible from the exterior of the telly 1' and terminates in a squared portion 17 adapted to receive a wrench or key (not shown). Mounted to slide in the recess 6 is a dog 18. The dog 18 is advanced by a compression spring 19 locate in the recess. The dog 18 has a depending stem mounted to move in the slot 51 in the telly 1. The stem 50 is provided with an angular arm 52 terminating; in a button 20. The dog 18 is adapted to engage a notch 53 in the ring 8. The folly 1 has transverse ribs 24. At 25 there appears a demountable rim carrying atire 26. The demountable rim 25 has a transverse rib 27 received between the ribs 2 1 on the telly 1. One end of the rib 27 is inclined as shown at 28 to codperste with the inclined edge 1'0 of the lug 9 on the ring 8. The inclined end 28 of the rib 27 has Mounted to rim 25 is locked on the folly 1. Then the cooperation between the parts is as follows:--

The rib 27 of the demountable rim 25 abuts at one end against the side flange 2 of the telly 1 as shown in Fig. 1, and is received between the ribs 24 of the main rim. As a consequence, the demountable rim 25 cannot creep circumferentially of the telly 1. The ring 8 is advanced by the action of the spring 11, circumferentially, in the direction of the arrow A, until the inclined edge 10 of the lug 9 cooperates with the inclined end 28 of the rib 27 and, consequently, the demountable rim cannot be-slid crosswise of the folly 1. The wedge 90 is engaged in the recess 92 and consequently any looseness in the demountable rim, in a direction parallel to the median plane of the wheel, is taken up. When it is desired to remove the de mountable rim 25 from the folly, the following operation is carried out By means of the squared end 18, the shaft 16 is rotated, and the pinion 15 on the shaft 16, meshing into the-rack 14 on the ring 8, rotates the ring 8 in the direction of the arrow B, until the lug 9 on the ring 8 is out of engagement with the end of the rib 27 on the demountable rim 25. When the ring 8 is rotated; in the direction of the arrow B, as above described, the spring 11, hearing against one end of the lug 9, is put under tension. When the ring 8 is rotated in the direction of the arrow B, the dog 18, under the action of the spring 19, engages in the notch or seat- 53 in the ring 8.. A reverse rotation of the ring 8 in the direction of the arrow A, under the action of the spring 11 is, therefore, prevented. When the ring 8 is rotated in the direction of the arrow B, the lug 9 first clears the end of the rib 27 on the demountable rim 25. Then the arm 31 of the lever 29 is engaged by the projection 3.3 on the ring 8. The lever 29 is tilted on its fulcrum 36, and the arm 30 of the lever, engaging the projection 35 on the de mountable rim 25, starts the demountable rim transversely of the telly 1. The demountable rim 25 may then be slid entirely oil' the folly 1 by hand, and when this opera tion is carried out, the projection 35 on the demountable rim passes through the slot 3a in the flange 3 on the telly 1.

The dog 18 may be pushed inwardly by pressure exerted against the button 20, and when the dog 18 moves out of the notch or seat 58, the ring 8 is free to move in the direction of the arrow A, under the action of the spring 11.

Having thus described the invention, what is claimed is:

1. In a device of the class described, a felly; an auxiliary rim having a transverse rib; means on the telly for engaging the rib to prevent the auxiliary rim from creeping on the folly; mechanism forholding. the

auxiiiary rim from moving transversely of the telly, said mechanism comprising a locking member mounted to slide on the telly circu mferentially of the folly and having a projection engaging the end oi the rib, a lever fulcrumcd intermediate its ends on the telly, spaced projections on the locking member, and coacting one at a time with one end of the lever, and a projection on the anxiliary rim, and coacting with the other end of the lever.

2. In a device of the class described, a folly; an auxiliary rim having a transverse rib; means on the telly for engaging the rib to prevent the auxiliary rim from creeping on the telly; mechanism for holding the auxiliary rim from moving transversely of the telly, said mechanism comprising a looking member mounted to slide on the telly circumferentially of the telly and having a projecting lug engaging the end of the rib, the lug and said end of the rib being mutually inclined, spring means for moving the locking member in one direction to cause the lug to engage the end of the rib, and means under the control of an operator for moving the locking member in an opposite direction, tobdisengage the lug from the end of the r1 3. In a device of the class described, a telly; an auxiliary rim having a transverse rib; means onthe telly for engaging the rib rto preventthe auxiliary rim from creeping on the telly; mechanism for holding the auxiliary rim from moving transversely of the telly, said mechanism comprising a locking member mounted to slide on the main rim circumferentially of the main rim and having a projecting lug engaging the end of the rib, the lug and the end of the rib being mutually inclined, spring means for moving the locking member 1n one direction to cause the lug to engage the end of the rib, a latch slidable on the telly transversely thereof and engaging the locking member to hold the locking member retracted against the action of the spring means, the latch including a manipulating part disposed exteriorly of the felly, and means under the control of an operator for moving the locking member in an opposite directiom-to disengage the lug from the end of the rib, against. the action of the spring means.

4. Ina device of the class described; a

telly; an auxiliary rim having a transverse rib provided at one end and on its under edge with a recess; means on the telly for engaging the rib to prevent the auxiliary rim from creeping on the telly; mechanism for holding the auxiliary rim from moving transversely of the telly, said mechanism comprising a locking member mounted to slide circumferentially of the. telly, the locking member having a projection engaging one end face of the rib, the projection and said end face of the rib being mutually inclined to crowd the auxiliary rim transversely 0f the felly, the projection having a lateral Wedge engaged in the recess, the Wedge being inclined circumferentially 0f the telly to expand the auxiliary rim circmnferentially.

In testimony that I claim the foregoing as my own, I have hereto affixed my slgnature in the presence. of two Witnesses.

THOMAS F. BURNS.

Witnesses:

C. R. SHIDEN, JOHN P. NONALL. 

